replace special characters in c#

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1.16/5 (4 votes)

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I have string with special characters.so how to
replace special characters in c# like "<[^>]+/\'.{}()#$*@!:;?>."
or in sql at once.

Posted 10-Sep-12 0:06am

softprga

Updated 17-Feb-22 1:10am

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Sunil Kumar Pandab · Answer 1 · 2012-09-10T00:16:00

Solution 1

C#

using System.Text.RegularExpressions;
public string RemoveSpecialCharacters(string str)
{
    return Regex.Replace(str, "[^a-zA-Z0-9_.]+", "", RegexOptions.Compiled);
}

It is tested Ok. Hope you find your solution.

Posted 10-Sep-12 0:16am

Sunil Kumar Pandab

Updated 10-Sep-12 0:21am

v2

Kuthuparakkal · Answer 2 · 2012-09-10T00:17:00

Solution 2

try:

C#

string dirty = "Dirty sql_ > uni^#@ unicode!";
string clean = Regex.Replace(dirty, @"([^a-zA-Z0-9_]|^\s)", string.Empty);

Posted 10-Sep-12 0:17am

Kuthuparakkal

Updated 10-Sep-12 0:40am

v2

_Amy · Answer 3 · 2012-09-10T00:18:00

You just need to loop through the string and replace the values. Try using this function:

C#

public static string fnRemoveSplChars(string strMyString) {
   StringBuilder sb = new StringBuilder();
   foreach (char c in strMyString) {
      if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') | || (c >= 'a' && c <= 'z') ) {
         sb.Append(c);
      }
   }
   return sb.ToString();
}

--Amit